A handbook of surface antomy and landmarks / by Bertram C.A. Windle.

  • Bertram Coghill Alan Windle
Date:
1896
Catalogue details

Licence: Public Domain Mark

Credit: A handbook of surface antomy and landmarks / by Bertram C.A. Windle. Source: Wellcome Collection.

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    smooth surface named the glabella, from which certain cranial measurements are made. Below the supra-ciliary ridges are the margins of the orbit, or supra-orbital ridges as they are sometimes called. Each ridge is bounded at either extremity by a strong prominent angle, the outer of which is by far the better marked ; these angles are the external and internal angular processes. The former limits ante- riorly the temporal fossa, the temporal muscle which it contains, and the temporal ridge with its attached fascia. By pushing up the skin covering the eyebrows, the supra-orbital notch may generally be felt at about the junction of the middle and internal thirds of the supra- orbital ridge. This notch is sometimes replaced by a foramen, which may be situated somewhat deeply in the cavity of the orbit ; its discovery is then more diffi- cult, but it may be found by deep pressure. Through this notch or foramen pass the supra-orbital nerve and artery. The former, a branch of the ophthalmic division of the fifth nerve, is one of the common seats of facial neuralgia, for which complaint it may be necessary that it should be stretched or divided. Two other spots, at which branches of the fifth nerve emerge from bony canals are of similar importance. The infra-orbital branch of the superior maxillary division emerges from the infra-orbital canal beneath the prominent ridge which forms the lower margin of the orbit. The infra- orbital foramen whose aperture looks inwards, is covered
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